Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0f97063b4c95d26e4673b15213012504e8256aedccf16e555fd72b3fe490ad6' 
  AND token = 'fOZe9gVzU0Nx7bnFRsVzgDaQez0Af5PTs/Ol+tFT6as=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}